疑问 yíwèn HSK4 doubt Origin Definitions Defs Strokes Stroke Words Sentences Sents 毫无疑问 háowúyíwèn undoubtedly Beyond any doubt; certain; unquestionable疑问句 yíwènjù interrogative A sentence that asks a question or requests information in a grammatical context.疑问代词 yíwèndàicí interrogative pronoun interrogative pronoun (such as who, what, where etc.)